Shredder 

First Appearance: May 1984
Inspiration: Cheese Graters
After Kevin Eastman and Peter Laird came up with the idea of four wisecracking martial arts reptiles known as the Teenage Mutant Ninja Turtles, they needed a imposing villain for them to fight. In the 1991 video The Making of ‘Teenage Mutant Ninja Turtles’: Behind the Shells . Eastman describes his inspiration for Shredder like this:
It’s probably the silliest way we came up with a character. I was drawing this up, and I slid my hand and held on to the end. Could you imagine a character with weapons on his arms like this? The guy would be lethal. And we’re like “Shredder! What a name for a character.

http://screenrant.com/best-comic-book-villains-real-life-inspiration/

Shredder 

First Appearance: May 1984

Inspiration: Cheese Graters

After Kevin Eastman and Peter Laird came up with the idea of four wisecracking martial arts reptiles known as the Teenage Mutant Ninja Turtles, they needed a imposing villain for them to fight. In the 1991 video The Making of ‘Teenage Mutant Ninja Turtles’: Behind the Shells . Eastman describes his inspiration for Shredder like this:

It’s probably the silliest way we came up with a character. I was drawing this up, and I slid my hand and held on to the end. Could you imagine a character with weapons on his arms like this? The guy would be lethal. And we’re like “Shredder! What a name for a character.

http://screenrant.com/best-comic-book-villains-real-life-inspiration/

tmnt shredder